Results 51 to 60 of about 17,928,638 (295)
Novel Second-Order Derivative-Based Filters for Edge and Ridge/Valley Detection in Geophysical Data
, 2023 Derivative-based high-pass filters of various types are commonly applied to potential field data to reveal subtle or hard-to-see structures in the quest for mineral exploration.
Gordon Robert John Cooper
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(α)-Stable Multi-Derivative GLM
Journal of Algorithms & Computational Technology, 2015 This paper considers multi-derivative general linear methods and thus presents some second and third derivative general linear methods of orders 5, 7 and 10 in its output methods for computing the solution of stiff initial value problems in ordinary ...
R. I. Okuonghae, M. N. O. Ikhile
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo +5 more
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Fractional variational problems with the Riesz-Caputo derivative [PDF]
, 2012 In this paper we investigate optimality conditions for fractional variational problems, with a Lagrangian depending on the Riesz-Caputo derivative. First we prove a generalized Euler-Lagrange equation for the case when the interval of integration of the ...
Almeida, R. +2 more
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Zanco Journal of Pure and Applied Sciences, 2021 Three methods for simultaneous estimation of diclofenac sodium and pridinol mesylate have been developed. First method is the application of the Q–analysis (absorbance ratio) method, the wavelengths selected were 265nm (isosbestic point) and 285nm (λmax
Hemn Khalid Qadir, Hemn Abdul Qader
doaj
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin +2 more
wiley +1 more source
The Numerical Solution of Stiff IVPs in ODEs Using Modified Second Derivative BDF [PDF]
, 2012 summary:This paper considers modified second derivative BDF (MSD-BDF) for the numerical solution of stiff initial value problems (IVPs) in ordinary differential equations (ODEs). The methods are A$(\alpha )$-stable for step length $k\le 7$
Ikhile, M. N. O., Okuonghae, R. I.
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Second-Order L1 Schemes for Fractional Differential Equations
Fractal and FractionalDifference schemes for the numerical solution of fractional differential equations rely on discretizations of the fractional derivative. In this paper, we obtain the second-order expansion formula for the L1 approximation of the Caputo fractional ...
Yuri Dimitrov +3 more
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Derivative Spectrophotometric Methods for the Analysis and Stability Studies of Colistin Sulphate
Journal of Chemistry, 2015 Simple spectrophotometric methods were developed for the quantitative determination of colistin sulphate in bulk and dosage forms. The methods were based on the measurement of first and second derivative spectra of colistin sulphate at 298 nm and 318 nm,
Mohammed Mutasim Elimam +3 more
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An accelerated version of Newton’s method with convergence order 3+1
Results in Applied Mathematics, 2019 A root-finding method is developed that, like Newton’s Method, evaluates both the function and its first derivative once per iteration, but the new method converges at the rate 3+1, and moreover, it’s asymptotic error constant is proportional to the ...
Trevor J. McDougall +2 more
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